Abstract: The design of shielding room of X radiographic testing is very important for assuring the personnel safety. The structure design such as wall, roof, Pb gate and ventilation was introduced, the thickness of each material was calculated. The radiation dose at different location in the detecting room was tested at ordinary working condition. Practical testing showed that, the design plan using bricks and Pb gate could shield the radiation and scattering ray effectively, and it met the requirements of theoretical calculation and safety assurance standard.